<template>
  <div class="todo-header">
    <input type="text" v-model="todo" placeholder="请输入你的任务名称，按回车键确认" @keyup.enter="add"/>
  </div>
</template>

<script>
export default {
  name: "TodoHeader",
  props: {
    addTodo: Function
  },
  data() {
    return {
      todo: ''
    }
  },
  methods: {
    add() {
      const td = this.todo.trim()
      // 1.检查
      if (!td) {
        alert("输入内容不能为空")
        return
      }
      // 2.组装
      const todd = {
        title: td,
        completed: false
      }
      this.addTodo(todd)
      this.todo = ''
    }
  }
}
</script>

<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}
</style>
